Paper-crinkling machine



Aug. 4, 192:5. 1,548,784

w. LORENZ PAPER CRINKLING MACHINE Filed Sept. 1, 1920 2 Shets-Sheet 1 INVENTOR.

ATTOW Aug. 4, 1925. 548,784 7 W. A. LORENZ PAPER CRINKLING MACHINE FiledSept. 1, 1920- 2 Sheets-Sheet 2 Fig. 4

5| Ill IN V EN TOR.

ATTO

?atcnted Aug. 4, i925.

uurren star V imam iar as" WILLIAM A. LORENZ, F HARTFORD, CONNECTICUT, ASSIGNOB TO THE O'I'AKA COMPANY, 015 HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

rarnacnninnme MACHINE.

Application filed September 1, 1920. Serial No. 407,400.

To all whom it may concern:

. Be it known that I, WILLIAM A. Lorena, "a citizen of the United States, residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Paper- Crinkling Machines, of which the following is a specification.

This invention relates to means for pro-- ducing crinkled or crped paper. It is usual to crepe the paper by advancing it edgewi'se against a doctor-blade. For th s purpose the paper is carried upon a rotating cylinder. The stationary blade strips the paper from the cylinder and reduces t "toga crinkled condition. The paper 1s usually moistened, partly to facilitate its bending into crinkles, and partly to enable thepaper to stick to the cylinder and there by be advanced against the blade wlth su flicient force to eflect the crinkling and stripping; it being customary to use a roll to press the paper against the revolving cylinder for the purpose of squeezing out surplus water, and forthe secondary'purpose of causing the paper to adhere to the cylinder, whereb the latter is enabled to carry or crush tlie paper edgewise against the doctorblade with the requisite force.

a; One of the objects of the present inventiontis-to provide a simple and eflicient means for crinkling'or crping thick and hea i y paper, as well as paper that has not been'much moistened. In either case, it is found that in using machines as previously constructed, the cylinder proves incapable ofadvancing thick paper or lightly moistened pager against the blade with 'suflicient powrgpirt-ioularly since the heavier the 40 paper orth drier it is, the harder it must be driven against the doctor-blade in order to crushit into crinkles.

ccording to the present invention, there is provided in proximity to the doctor-blade, a gripping device comprising an element for causing the inner surface of the'advancing paper to havea strong grip upon the surface of the rotating cylinder, and to confine the paper against yielding facewise. This comprlses a pressure roll close to the doctorblade and pressing the paper against the surface of the rotating cylinder or carrier,

thereby giving the cylinder the requisite control "over the stiff sheet to crush it edgework to be spoiled by reason of inaccuracy wise. A device extends from said pressure roll to the doctor-blade for confining the paper to the rotating cylinder, thus overcoming the natural tendency of the stilf papenqto bulge away from the cylinder after passing the said pressure roll (especially at the side portions of the sheet or web). There is thus produced continued frictional engagement between the paper and rotating cylinder, and the leading edge of the web is presented properly at all times to the doctor-blade to be crushed thereagainst.

Further features of the improvement have reference to the construction of the doctorblade, which is subject to wear uponthe surface thereof that rides upon the rotating I9 cylinder. Because of this wear, blades have usually required considerable attention and frequent re-adjustments, in order to keep the crimping surface of the blade at the proper angle to the 'periphery'of the cylinder. This :difliculty is overcome by forming the blade as a portion of a cylindrical body, which is cut away longitudinally to forman edge which is designed to rest upon the rotating cylinder, while the paper crinkles against the; peripheral portion of the blade. The blade is mounted for rotative adjustment, so that when wear of the edge occurs, it is only necessary to rotate the blade at little. At every such re-adjustment, the angle of the blade to the periphery of the'rotating cylinder remains the same, or is undisturbed, so that the work of adjustment is simplified, and there is no liability to cause the in the angle which the re-adj'usted blade presents to the rotating cylinder.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a plan of my improvements applied to a simple machine for producing lines of crinkles across an advancing web; although the improvements are not limited to such machines.

I Figure 2 is a sectional elevation of the machine taken at about the line 2-2 of Figure 1.

Figure 3 is a sectionaldetail elevation on a larger scale taken at about the line 3-3 of mi Figure 1, and showing, the doctor-blade and the gripping roll and plate.

Figure 4 shows a different form of doctor blade fro n Figure 3, This view shows the doctor-blade applied. to a crimping machine from which. the gripping elements seen at Figures 1, 2 and 3 are omitted. Said Figure 4 also shows aroll for pressing out the surplus waterfrom the web and causing it to stick to the rotating cylinder or carrier.

Figure 5 is an elevation, and Figure 6 an end view of a doctor-blade in the form of a segment of a tube, as shown at Figure 3'. Figure 7 is a plan and Figure 8 an end view of a plate forming one of the gripping elements seen at Figures 1, 2 and 3, and extends from the gripping or pressure roll to the doctor-blade1 A'supply ef'paper 10 in the form of a roll is' carried on a spool 11 and retarded by a weighted Strap 12. The web is led over an idle roll 13, where it may be moistened by water or steam from a sprinkler pipe 14.

The web then runs around a rotating main crinkling-cylinder 15; and the under side of the web maybe moistened by a sprinkler pipe 16. The main cylinder 15 is driven by a pulley 17 and pinion 18 in mesh, with a gear 19 fixed to the-cylinder 15. The paper is thrust or crushed by the cylinderedgewise against a doctorblade 20, whereby it is crinkled, as at 21.-andled away over a dc livery belt22.

For producing and maintaining a strong grip of the paper upon the cylinder, there'is provided a. grip-producing device comprising a roll 23, which presses the paper firmly against the cylinder. This roll may have a driving pinion 24 on its shaft 25, said pinion meshing with main gear 19. The surface of this pressure roll may be of a soft rubber, or any other suitable material. It not only drives the paper by reason of its own fric' tion therewith, but also causes a firm grip of the main cylinder to be taken by the paper.

The paper-gripping elements also comprise an auxiliary member extending from the gripping roll 23 to the doctor-blade 20, in the form of a plate 26', which may curve in conformity with the periphery of cylinder 15, and may extend approximately from the bight of the roll and cylinder, or from the point where the roll 23 runs upon the paper, to apoint close to the doctor-blade, leaving a throat at 27 through which the crinkled paper may emerge. This plate 26 confines the paper closely to the cylinder throughout the interval between the pressure roll and the doctor-blade. Bv reason of this confinement the paper, as it is urged by both cylinder 15 and roll 23, cannot yield in any direction except by advancing. In other Words, the paper is so supported facewise that it can transmit considerable force longitudinally, and thereby effectively crush its advancing edge portion against theL/doc tor-blade. To augment the effect of the plate 26, it may be provided with serrations 28, to enter peripheral grooves29 formed in the pressure roll 23, whereby the controlling effect of the plate 26 may be caused to begin approximately at the point where the pressure roll 23 leaves the paper. surface of the teeth or serrations 28 may be rounded at 28, to facilitate the entrancexof the paper between the plate and the cylinder 15. Theplatemay be secured upon a pair of fixed brackets 30, by pairs of co-operating screws 31, which permit adjustment, so that the plate may be adjusted at either edge or bodily towards the cylinder or away therefrom, to adapt it for controlling sheets of various thickness and stiffness. The brackets 30 may be secured to the framework by means of bolts 32.

The doctor-blade 20 is preferably in the form of a segment of a tube, and is fastened byibolts 33 and plate 34 on a horizontal cross-bar 35, fixed in bosses 36 upon the sides of the machine frame The bar 35 maybe cylindrical, so that the doctor-blade may fit and'be rotatively adjustable thereon. As seen at Figure 6, the bolt holes in the doct0rblade may be widened or formed into slots 37 to permit rotative adjustment. The narrow dimensionsof the slots are seen at F igure 5. The cylindrical support 35 may be so formed and placed as to secure any de* sired angle between the outer surface or periphery of doctor-blade 20, and the periphery of the cylinder 15. When the under edge of. the doctor-blade has been ground away, a simple readjustment thereof may be effected by rotating the doctorblade 20 around the cylindrical support 35, without changing in the least the angular relationship between the periphery of the doctorblade and the periphery of the main cylinder.

mounted at its ends by gudgeons 38, and a spring 39 is connected to an arm 40 provided on the doctor-blade, to turn it upon axis 38 so that the edge of the doctor-blade is positively pressed against thecylinder and wear is automatically taken up, by the spring 39. At Figure 1 is illustrated a roll 41 for pressing the surplus water out of the paper and causing ib to stick to the cylinder, tobc carried against the doctor-blade. v Variationsjmay be made in the scope of the invention", and portions of the improvements may be used without others; as for example the novel doctor-blade may be employed independently of the gripping elements 23, 26 as in Figure 4; and for further example said gripping elementsmay be used in connec ion with an ordinary doctor-blade, or with 0 her forms of doctor-blade.

Having thus described my invention, I claim: 3 1. The combination of a carrier roll, a doctor blade, means for advancing the paper The under.

At Figure 4:, the doctor-blade is pivotally on said roll against said doctor blade, the latter being made with a substantially circular outer surface and and means to press t doctor blade against the surface of the carrier 1:011, in order -to maintain the outer front surface in a uniform position with re spect to the carrier roll.

2. The combination of a'carrier roll, a doctor blade, means for advancing the paper on said roll against said doctor blade, the latter being made with a substantially circular outer surface and pivoted upon an arm, means to press the front edge of the doctor blade against the surface of the carrier roll, in order to maintain the outer front surface in a uniform position with respect to the doctor blade, and means for pressing the water from the paper as it advances on the carrier roll.

3. The combination of a carrier roll, a

pressure roll, a doctor blade, and a holder in front of the doctor blade for holding the paper at that point during the crinkling operation; said holder having teeth to match grooves in the pressure roll, to deliver the paper from the pressure roll postivelyforward under the holder towards the doctor' blade. 4. A paper-crinkling machine comprising,

in combination, a crinkling cylinder, a doctor blade, means toco-operate with the cylinder to crush the paper edgewise against the doctor blade to crinkle it, said co-operating means including a power-driven pressure roll in'proximity to the doctor blade to press the paper against the cylinder and a confining member between the same.

5. A paper-crinkling machine comprising, in combination, a crinkling cylinder a doctor blade, means to co-operate with fhe cylinder to crush the paper edgewise against the doctor blade to crinkle it, said co-operating means including a power-driven pressure roll in proximity to the doctor blade to press the paper against the cylinder, and a plate extending from the bight of the pres- 'sure roll and cylinder to the doctor blade,

for confining the paper against yielding facewise. 1

6. The combination of a crinkling cylinder, a doctor blade, a power-driven pressure roll to run upon the cylinder in proximity to the doctor blade, and an auxiliary papercontrolling member extending from said roll approximately to the doctor blade and in the form of a plate curving around the periphery of the cylinder, leaving a throat between the edge of the plate and the doctor blade through which the crinkled paper -may emerge.

7. The combination-of a crinkling cylinder, a doctor blade, a pressure roll to run upon the cylinder in proximity to the'doctor blade, and an auxiliary paper-controlling pivoted upon an arm, e front edge of the.

member extending fiiom said roll approximately to the doctor blade and in the form of a platecurving arpund the periphery of to support the paper so that it cannot yield facewise,'to enable the paper to transmit suflicient force edgewise to crush i self egainst the doctor-blade to effect its crinkng. y

8. A paper-crinkling machine comprising, in combinatiom-a crinkling cylinder, a doctorblade, means to co-operate .with the cylinder to crush the paper edgewise against the doctor blade to crinkle it, said co-operating means including apressure roll in proximity to the doctor blade to press the paper against the cylinder, and a plate extending from the bight of the pressure roll and cylinder to the doctor blade, for confining the paper against yielding facewise, said pressure roll having peripheral grooves, and said plate having teeth or fingers extending Within said grooves.

9. A paper-crinkling machine comprising, in combination, a crinkling cylinder, a doctor blade, means to co-operate with the cylinder to crush the paper edgewise against the doctor blade to crinkle it, said co-operating means including a pressure roll in proximity tothe doctor blade to press the paper against the cylinder, and a plate extending from the bight of the pressure roll and cylinder to the doctor blade, for confining-the paper against yielding facewise, means being provided for effecting adjustments of the plate towards and away from the cylinder for controlling sheets of different thickness and stiffness.

10. The combination with a crinkling cylinder, ofa doctor blade having an edge to present tothe cylinder, said doctor blade extending along the cylinder and mounted for rotative adjustments toward and away from the cylinder, said blade curving concentrically with its pivot of rotation, so that when re-adjusted the angle of the blade to the periphery of the rotating cylinder remains substantially the same.

11; The combination with a crinkling cylinder, of a doctor blade therefor in the form of a segment of a tube, and means supporting said doctor blade for pivotal adjustment.

12. The combination with a crinkling cylinder, of a doctor blade therefor in the form of a'segment of a tube, and means supporting said doctor blade for pivotal adjustment, said supporting means in the form of a cross-bar.

13. The. combination with a crinkling cylinder, of a doctor blade therefor in the form of a segment of atube, means supporting said ,ioctor blade for pivotal adjustment, said supporting means in the form of a crossbar, and ineans for' securing said tube to said cross-bar, comprising a plate.

14. The combination with a crinkling cylinder, of a doctor blade therefor in the form of a segment 'of a tube, means supporting said doctor blade for pivotal adjustment, said supporting means in the form of a cross-bar, and means for securingsaid tube to said cross-bar, comprising a plate, said bar being cylindrical to permit rotatii e adjustment of the doctor blade thereon.

15. The combination with a crinkling cylinder, of a doctor blade in the form of a segment of a cylinder, means whereby said doctor blade is pivoted substantially concentrically with its cylindrical surface, and means for effecting rotation of said doctor blade.

16. The combination with a crinkling cylinder, of a doctor blade in the form'of a segment of a cylinder, means whereby said doctor blade is pivoted substantially concentrically with its cylindrical surface, and

means for effecting rotation of said doctor blade, said rotating means comprising a spring.

17. The combination with a crinkhng i cylinder, of a doctor blade in the form of a segment of a cylinder, means whereby said doctor blade is pivoted substantially concentrically with its cylindrical surface,-

means for eflecting rotation of said doctor blade, saidrotating means comprising a spring, andan-arm provided upon the doctor blade and operated by said spring to press the edge of the doctor blade against the cylinder and aiitoi'natically take up the wear.

18. The combination with a erinkling cylinder, of a doctor blade therefoigand means supportingsaid doctor blade for pivotal adjustnjlent towards said cylinder, fortaking up the wear on the blade, said blade having a cylindriform surface about concentric with the pivot.

19. A papengripping plate provided with serrations to: enter peripheral grooves formed in a pressure roll for co-operation with a doctor blade in the manner specified.

20. A paper-crinkling machine comprising, in combination. a crinkling cylinder, a-

doctor-blade, means to co-ope-rate with the cylinder to crush the paper edgewise against the doctor blade to crinkle 1t, said co-operating means including a pressure roll in proximity to the doctprblade to press the paper against the cylmder. and papenholding means between the roll and the doctor blade.

' ing means including a pressure roll in proxs upon the cylinder in? proximity to the doctor blade, and an a-uxiliary paper-controlling member extending from said roll approximately to the doctor blade and in the form of a plate curving around the periphery of the cylinder, leaving a throat between the edge of the plate and the doctor blade through which the crinkled paper may emerge.

23. The combination with a cylinder, a doctor blade and a roll to run on the cylinder, of a plate extending from the cylinder approximately to the doctor blade curving in conformity with the cylinder, leaving a throat through which crinkled paper may emerge.

24:. The combination with a cylinder, a doctor blade and a roll to run on the cylinder, of means between the roll and the doctor blade forconfining the paper closely to the cylinder throughout the interval between the pressure roll and the doctor blade.

25. The combination with a cylinder, a doctor blade and a roll to run on the cylinder, of means between the roll and the doctor blade for confining the paper closely to the cylinder throughout the interval between the pressure roll and the doctor blade, thereby preventing the paper from yielding in any direction except by advancmg.

26. The combination with a cylinder and a doctor blade, of means to co-operate with said cylinder in advance of said doctor blade to support the paper facewise for a substantial distance near said doctor blade, so that the paper can transmit considerable force longitudinally and thereby effectively crush its advancing edge against the doctor blade, said blade having serrations to enter peripheral grooves in the pressure roll, whereby the controlling effect of the blade is caused to begin approximately at the point where the pressure roll leaves the paper.

27. The combination with a cylinder and a doctor blade, of means to co-operate with said cylinder in. advance of said doc-tor blade'to support the paper facewise for a substantial distance near said doctor blade, so that the paper can transmit considerable force longitudinally and thereby effectively crush its advancing edge against the doctor blade; said blade having serrations to enter peripheral grooves in the pressure roll, whereby the controlling effect of the blade is caused tobegin approxiately at the point where the pressure roll leaves the paper, the

under surface of the serrations being rounded to facilitate the entrance of the paper between theb'lade and the cylinder. 28.- The combination with a crinkling cylinder and a cylindriform doctor -b1ade'1mov able relativelythereto, of means for efiecting readjustment'of the. doctor blade by a.

rotative movement therecf, Without chang-' ing'the angular relationship between the periphery of the doctor blade and the periphery of the cylinder.

v 29. The combination'with a crinkling cylinder anda cylindriformdoctor blade, of a cylindrical support for said doctor blade, said supportformed and placed so as to secure any desired angle between the outer surface of the periphery of the doctor blade and the periphery of the cylinder. ,7 v

I WILLIAM A. LORENZ. Witnesses: LILIIAN M. TAYLOR, M. EULALIA WILIJAMS. 

